Mercurial > jhg
view src/org/tmatesoft/hg/repo/HgLookup.java @ 239:df9d2854d3d6
Initial access to subrepositories
author | Artem Tikhomirov <tikhomirov.artem@gmail.com> |
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date | Thu, 16 Jun 2011 04:23:51 +0200 (2011-06-16) |
parents | 41a778e3fd31 |
children | 981f9f50bb6c |
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/* * Copyright (c) 2010-2011 TMate Software Ltd * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * For information on how to redistribute this software under * the terms of a license other than GNU General Public License * contact TMate Software at support@hg4j.com */ package org.tmatesoft.hg.repo; import java.io.File; import java.io.IOException; import java.net.MalformedURLException; import java.net.URL; import org.tmatesoft.hg.core.HgBadArgumentException; import org.tmatesoft.hg.core.HgException; import org.tmatesoft.hg.internal.ConfigFile; import org.tmatesoft.hg.internal.DataAccessProvider; import org.tmatesoft.hg.internal.Internals; /** * Utility methods to find Mercurial repository at a given location * * @author Artem Tikhomirov * @author TMate Software Ltd. */ public class HgLookup { private ConfigFile globalCfg; public HgRepository detectFromWorkingDir() throws HgException { return detect(System.getProperty("user.dir")); } public HgRepository detect(String location) throws HgException { return detect(new File(location)); } // look up in specified location and above public HgRepository detect(File location) throws HgException { File dir = location.getAbsoluteFile(); File repository; do { repository = new File(dir, ".hg"); if (repository.exists() && repository.isDirectory()) { break; } repository = null; dir = dir.getParentFile(); } while(dir != null); if (repository == null) { // return invalid repository return new HgRepository(location.getPath()); } try { String repoPath = repository.getParentFile().getCanonicalPath(); return new HgRepository(repoPath, repository); } catch (IOException ex) { throw new HgException(location.toString(), ex); } } public HgBundle loadBundle(File location) /*XXX perhaps, HgDataStreamException or anything like HgMalformedDataException? Or RuntimeEx is better?*/{ if (location == null || !location.canRead()) { throw new IllegalArgumentException(); } return new HgBundle(new DataAccessProvider(), location).link(); } /** * Try to instantiate remote server. * @param key either URL or a key from configuration file that points to remote server * @param hgRepo <em>NOT USED YET<em> local repository that may have extra config, or default remote location * @return an instance featuring access to remote repository, check {@link HgRemoteRepository#isInvalid()} before actually using it * @throws HgBadArgumentException if anything is wrong with the remote server's URL */ public HgRemoteRepository detectRemote(String key, HgRepository hgRepo) throws HgBadArgumentException { URL url; Exception toReport; try { url = new URL(key); toReport = null; } catch (MalformedURLException ex) { url = null; toReport = ex; } if (url == null) { String server = getGlobalConfig().getSection("paths").get(key); if (server == null) { throw new HgBadArgumentException(String.format("Can't find server %s specification in the config", key), toReport); } try { url = new URL(server); } catch (MalformedURLException ex) { throw new HgBadArgumentException(String.format("Found %s server spec in the config, but failed to initialize with it", key), ex); } } return new HgRemoteRepository(url); } public HgRemoteRepository detect(URL url) throws HgException { if (url == null) { throw new IllegalArgumentException(); } if (Boolean.FALSE.booleanValue()) { throw HgRepository.notImplemented(); } return new HgRemoteRepository(url); } private ConfigFile getGlobalConfig() { if (globalCfg == null) { globalCfg = new Internals().newConfigFile(); globalCfg.addLocation(new File(System.getProperty("user.home"), ".hgrc")); } return globalCfg; } }